Pump.



No. 860,259. PATBNTED vJULY 16, 1907.

E. E. SLIGK.

PUMP.

LrPLIoA'rIoN Hmm 1120.21.1904.

2 SHEETS-SHEET 2.

EDWIN E. SLICK, OF PITTSBURG, PENNSYLVANIA.

PUMP.

Speccation of Letters Patent.

Patented July 16, 1907.

Application filed December 27, 1904. Serial No. 238,298.

To all. whom it may conclrn:

Be it known that I, EnwiN E. SLICK, of Pittsburg, .Allegheny county,Pennsylvania, have invented a new and useful Pump, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure l. is a sectional side elevation of a pump constructed inaccordance with my invention; Fig. 2 is a sectional elevation of theoutlet valve structure; Fig. 3 is a plan view of the valve seat; Fig. 4is alface view ol' the back stop; and Fig. 5 is a plan view partlybroken away of the valve.

My invention relates to the class of pumps for pumping liquids or gases,and is designed to provide an improved construction of the pump and itsvalves.

In the drawings, 2 represents the cylinder containing the piston 3,whose piston rod 4 is connectedto a similar rod extending from anysuitable motive cylinder or other source of power. The cylinder isprovided near each-end with an annular series of inlet ports 5 leadingout of an annular chamber 6 formed between the cylinder and asurrounding casing 7 which has an inlet port connected to the source of:supply for the fluid beiiig pumped. The. cylinder 2 is moved endwise bylinks 8 pivotally connected to rocking levers 9 actuated by any suitableconnections. The stationary heads of the cylinder are provided withsuitable packings 10 which Contact with the cylinder as it reciprocatesover the heads. The cylinder heads Aare connected and supported byoppositely located distance pieces.

The heads are hollow, each being provided with a box or outlet chamber11 from which chambers the channels 12 lead out, and are connected toanoutlet pipe. The inner fa'ces of the heads are provided with valve seatsand outlet valves shown in detail in Figs. 2 to 5. In these figures 13is a removable valve seat having preferably a beveled or inclined edgewhich fits within a correspondingly beveled hole in the head of thecylinder; and is held therein by the screw-bolt 14. The seat is providedon opposite sides of a diameter, with sets of outlet holes each ofcomparatively small area. The valve proper consists of a plurality ofthin steel disks 15 which are superimposed and clamped at their centersbetween the back-stop 16 and the valve seat. The face of the back-stopwith which the valve contacts is preferably shaped as a portion of acylinder, so that as the valve leaves bend backwardly on opposite sides,they will be forced against the stop which will prevent their breakage.The cylindrical surface allows them to fit against it without crumplingor injuring the valve. The use of a number of layers of thin disks is animportant feature of the valve, since 1 thereby obtain the necessarystrength for resisting the pressure, while at the same time the valve ismud more flexible than it -would be if a single valve plate were used ofsufficient thickness to withstand the pressures. Also by making a seriesof outlet holes beneath each half of the valve I decrease the tendencyof the valve to be forced into the outlet hole under the back pressure.The back-stop is held by nut 17 and lock nut 18 on the bolt, the outerend of which enters an internally screwthreaded plug 19 held within aremovable plate 20 by nut 21. l

In the operation of the device the piston and the cylinder arereciprocated in a suitable manner, so that the cylinder ports actalternately as inlet ports, while the air is forced alternatelyl out ofthe cylinder through the series of valves in the opposite heads. As manyof these valves as can be arranged Within the circle of the head aroundthe piston rod, are preferably used so as to give a large area: ofoutlet, the cylinder ports giving a large area for the inlet.

The advantages of my invention result from providing the casing around acylinder having ports extending through it in connectionwith outletports in the heads; also from the peculiar form and arrangement of thevalve and seat which avoids breaking and gives an easy and effectiveaction. The pump is specially adapted for gas engine driving where theaction is more rapid than in ordinary cases.

The shape of the valve disks and the manner of securing them may bechangedgand variations in the arrangement and construction of the partsmay be made without departing from my invention.

I claimz- 1. A pump having inlet and outlet ports, one set of said portsextending through the cylinder wall and the other through the cylinderhead, a stationary casing snrrounding the ports in the cylinder wall andmeans independent of the casing for alternately opening and closing .tueports in said cylinder wall; substantially as described.

2. A pump having inlet ports extending through the cylinder walls andoutlet ports in the cylinder head, a stationary casing Surrounding saidinlet ports and means independent of the casing for alternately openingand closing said inlet ports; substantially as described.

3. A pump having an outlet valve comprising a series of thin metallicsheets or disks of substantially the same size, clamped at their centerand arranged to bend backwardly at both sides in opening; substantiallyas described.

4. A pump having an outlet valve comprising a series of thin metallicsheets or disks of substantially the same size, clamped at theircenter`and arranged to bend backwardly on both sides in opening and aback stop against which the valve is pressed; substantially asdescribed.

5. A pump having an outlet valve comprising a series of thin metallicsheets or disks of substantially the saine size clamped at their centerand arranged to bend backwardly on both sides in opening, and a backstop against which the valve is pressed; substantially as described.

6. A pump having a movable cylinder, a stationary casing surroundingsaid cylinder and forming a. passage begveen the cylinder and casing,ports extending through r 5 g I said cylinder walls and affordingcommunication between said passage and the cylinder and means for.moving said cylinder t0 alternately open and close said ports;substantially as described.

7. In a pu'mp, a head having outlet valves'located in the head,consisting of two or more thin metallic sheets of substantially the samesize superimposed on each other and clamped in one portion and adaptedto bend backwardly on both sides in opening, and a cylinder having inletports extending through its Walls; substantially as described.

8. In a. pump, a head having outlet valves located in the head,consisting of a plurality of thin metallic sheets of substantially thesame size superimposed on eachother and clamped in 011e portion andadapted to bend backwardly on both sides in opening, and a valve seathaving a multiplicity of circular openings under the bending portions ofthe valve; substantially as described.

9. A pump having an outlet valve comprising a plurality of metallicsheets superimposed on each other and clamped in one portion thereof,said sheets being of substantially the same size and arranged to bendbackwardly on both sides of the clamp; substantially as described,

10. A pump having. an outlet valve comprising a plurality of metallicsheets superimposed on each other and clamped in one portion thereof,said sheets being of substantially the same size and arranged to bendbackwardly on both sides of the clamp, and a back stop against which thevalve is pressed; substantially as described.

11. A pump having an outlet valve comprising a plu rality of metallicsheets .of varying thicknesses superim.- posed on each other and clampedin one portion thereof, said sheets being of substantially .the samesize and arranged to bend backwardly in opening :substantially as deAscribed.

In testimony whereof, I have hereunto set my hand.

' EDWIN E. SLICK.

Witnesses -N. M. GRIFFIN, .H. M. CoRwIN.

